metamorphism tends to occur in regions where massive amounts of sedimentary or volcanic materials accumulate in a subsiding basin, pushing older rocks further into the interior. metamorphism tends to occur in regions where massive amounts of sedimentary or volcanic materials accumulate in a subsiding basin, pushing older rocks further into the interior. Hydrothermal Burial Regional Contact

Burial metamorphism tends to occur in regions where massive amounts of sedimentary or volcanic materials accumulate in a subsiding basin, pushing older rocks further into the interior

Explanation:

As the sediment is buried in a sedimentary basin (subsiding basin), the pressure increases due to the weight of the overburden and also the temperature increases due to the geothermal gradient, that is, burial metamorphism normally occurs in very deep sections of the sedimentary rocks of the basin where the temperature is very high (more than 300 C°), allowing the metamorphic reactions (recrystallization) and new low-grade metamorphic rocks to form.

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